That's not Velocidad (using an X-Man here would be rather odd); it's Calamity from the Order. I could use some help identifying the reserve Avengers in this issue, though.

Page 11, panel 3 (left to right):
??? (looks like Shroud, but not with the powers he's using)
Silverclaw
Anthem
Living Lightning
Gravity (he creates a gravity field, but now Greg Willis appears to be sporting a Johnny Cool/Zach Moonhunter look)
Toro
Calamity
(And what's up with that caped dog?)

Page 14/15, panel 1 (left to right):
Silverclaw
??? (grabbed by Camazotz's right hand)
Toro
??? (grabbed by Camazotz's left hand)
Rage
??? (lying in rubble)
??? (female with pigtails and blasting with her hands)
Living Lightning
??? (guy who looks like a capeless Prowler and wielding an H-shaped weapon in each hand)
Gravity

I'm quite sure it's Velocidad. His costume fits exactly. He should come in the place of Anthem and Calamity. With his speed powers he rescues an infant. Also he's from South or Central America as most of these Avengers. Maybe that's a clue to find matches for the others.

Do we know already when this Hulk story takes place? It even could happen after Avengers vs X-Men is finished.

I'm aware of the Order members Anthem and Calamity. Calamity's costume is white and blue, he wears a mask and red goggles. Anthem's costume is dark blue and yellow and he wears a cape.

Their costumes don't match the costume of the "Avenger" in this panel. That the costume of the man you've identified as Anthem matches the one you've identified as Calamity is true, because it's the same man in the same costume! If you look carefully you even can see the route he travels to rescue the infant. To make his speed visible, you can even follow his trail. These are not two men, but one and the same, it really is Velocidad. The colors of the costume dark brown with orange, no mask, dark hair, even the stripes on his costume match.

Have you looked at the previews of the new Marvel series, coming. If this Hulk story is placed then, it would match perfectly.

Totally missed that! I figured the Order changed their costumes. And yes, I've seen a preview for a certain team book featuring a mix of members of...other teams. Maybe it will turn out that Hulk is giving us a glimpse of the future!